气候变化领域集成服务门户(CCPortal): Seasonal variation in the leaf physiology of co-occurring invasive (Hakea sericea) and native (Pinus pinaster) woody species in a Mediterranean-type ecosystem

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DOI	10.1016/j.foreco.2020.118662
	Seasonal variation in the leaf physiology of co-occurring invasive (Hakea sericea) and native (Pinus pinaster) woody species in a Mediterranean-type ecosystem
	Morais M.C.; Cabral J.A.; Gonçalves B.
发表日期	2021
ISSN	0378-1127
卷号	480
英文摘要	Physiological traits are critical factors in species invasion success. It is generally accepted that invasive alien species (IAS) are more efficient at resource acquisition and/or use than are native species. However, in the case of the invasive Hakea sericea, the importance of such mechanisms remains unexplained. This gap in extant knowledge has prompted the present study, in which the main objective was contrasting the physiological performance of Hakea sericea with the native Pinus pinaster in Mediterranean-climate ecosystems. Leaf gas exchange, photosynthetic pigments, metabolites and water relationships were measured seasonally during one year, revealing a pronounced seasonal variation in all parameters. Overall, stomatal conductance (gs) peaked in spring, whereas intrinsic water use efficiency (WUE) reached its maximum in autumn. The highest photosynthetic rate (A) was detected in autumn and summer. Across the year, Hakea sericea displayed higher relative water content (RWC), A and WUE values than Pinus pinaster. Moreover, the IAS presented higher leaf total chlorophyll and soluble sugars. In turn, leaves of the native species had values of starch and proteins higher than the IAS. Therefore, compared with Pinus pinaster, Hakea sericea exhibits superior physiological performance mainly supported by an efficient use of resources and greater photosynthetic capacity. These characteristics are likely responsible for its invasion success in Mediterranean ecosystems. In addition, they could confer a significant competitive advantage in a changing climate, as well as enable this species to outcompete native species, resulting in increased abundance and more significant impact on ecosystems. © 2020
英文关键词	Biological invasions; Intrinsic water use efficiency; Maritime pine; Photosynthesis; Silky hakea
语种	英语
scopus关键词	Competition; Metabolites; Physiology; Intrinsic water-use efficiencies; Invasive alien species; Mediterranean climates; Mediterranean ecosystem; Mediterranean-type ecosystems; Photosynthetic capacity; Photosynthetic pigments; Relative water content; Ecosystems; abundance; chlorophyll; introduced species; photosynthesis; physiology; pine; seasonal variation; shrub; stomatal conductance; water use efficiency; Capacity; Competition; Ecosystems; Mediterranean; Moisture Content; Performance; Physiology; Pinus Pinaster; Hakea; Hakea sericea; Pinus pinaster
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154840
作者单位	Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, Vila Real, 5000-801, Portugal
推荐引用方式 GB/T 7714	Morais M.C.,Cabral J.A.,Gonçalves B.. Seasonal variation in the leaf physiology of co-occurring invasive (Hakea sericea) and native (Pinus pinaster) woody species in a Mediterranean-type ecosystem[J],2021,480.
APA	Morais M.C.,Cabral J.A.,&Gonçalves B..(2021).Seasonal variation in the leaf physiology of co-occurring invasive (Hakea sericea) and native (Pinus pinaster) woody species in a Mediterranean-type ecosystem.Forest Ecology and Management,480.
MLA	Morais M.C.,et al."Seasonal variation in the leaf physiology of co-occurring invasive (Hakea sericea) and native (Pinus pinaster) woody species in a Mediterranean-type ecosystem".Forest Ecology and Management 480(2021).